Chapter 4 Building Application Layer Diagrams

Application and Business Services (EAM)

An application service is an externally visible unit of functionality, provided by one or more applications or components, and exposed through well-defined interfaces.

An application service can be created in the following diagrams:

• Application architecture diagram (see Application Architecture Diagram Basics)
• Service-oriented diagram (see Service Oriented Diagram Basics)
• City planning diagram (see the Building Business Layer Diagrams chapter)

A business service is a service offered by an organization to its customers that directly supports the work performed in a business process or function, exposed by an application-to-business interface.

A business service can be created in the following diagrams:

• Service-oriented diagram (see Service Oriented Diagram Basics)

Example

In this example the Register sales business service is implemented by the Finance Service application service:

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